Shoe calk



Feb. 24, 1942. NILTKE Y 2,274,559

SHOE CALK Filed May 29, 1940 INVENTOR.

Patented Feb. 24, 1942 r UNITED STATES PATENT ()FFICE snon CALK Loren W.Nitkey, Dudley, Idaho Application May 29, 1940, Serial No. 337,938

6 Claims. (01. 366'7) This invention relates to shoe calks more par- Thehob nail or calk I shown in Figs. 1 and 2 ticularly adapted to beapplied to shoes or boots is intended for use on the sole 2 of a minersboot having rubber soles of the types used by miners, or shoe and has ahead 3 and a shank 4, the head loggers, golfers and others who work orexercise being shaped to form a plurality of stepped poroutdoors. Iitions or shoulders 5 extending circumferentially Heretofore it has beencustomary to equip rubof the head concentric to each other. This probersor rubber soled shoes with leather cleats into vides' the head of thecalk with a plurality of which calks are driven or screwed. Cleats sosharp-edged shoulders which serve very effecmounted havebeen foundunsatisfactory as snow tively to biteinto ice, snow and the like andpreballs up between the cleats, thus causing the sole I vent slipping,also serving to take wear that would to become stiff and slippery'towalk on. be taken by a shoe sole not equipped with hob It is, therefore,one object of the invention to nails. A neck 6 integrally connects thehead with provide calks which may be driven directly into a the shank 4and has its outer end portion formed rubber shoe sole and firm-1ysecured by nails which with a curved surface merging into the under areclinched in the rubber sole. It will thus be face of the lower steppedportion of the head.

seen that the cleats may be easily applied directly The calk is mountedthrough. a washer I which to the shoe sole and the sole will remainflexible is formed of stamped metal and has an inwardly since it is freefrom cleats against which snow extending collar 8 surrounded by anoutstanding has a tendency to gather and make the shoe stiff annular rib9 which is arcuate transversely, as and slippery. shown in Fig. 2, andconcentric to the collar which Another object of the invention is toprovide it surrounds and into which it merges. Thecalkswhich are soconstructed that when they curvature of the annular rib and the portionof are applied to companion discs or collars, a, firm the collar intowhich it merges conforms to the union will be established between thecalks and curvature of the outer portion of the neck 6 to collars whichreinforce the portions of the shoe establish a close fit between thecalk and washer. sole into which the shanks of the calks are em- Whenthe washer is applied to the calk, the colbedded. lar is swedged aboutthe neck for abutting en- Another object of the invention is to providean gagement with the circumferentially extending improved calk which issimple in construction, lip or shoulder I0, and from an inspection ofFig.

easy to apply, and of such construction that it 2, it will be seen thatthe calk and washer will be will be firmly held in place when applied toa firmly held in engagement with each other. The

shoe sole. calk is then ready to be applied to shoe sole 2 In theinvention illustrated in the accompanywhich is formed of rubber and whenso doing, the ing drawing, wherein: sharpened end of the shank is placedagainst the Fig. 1 is a view showing a miners hob nail in outer or underface of the shoe sole and driven side elevation and applied to a shoesole shown into same until the washer is in fiat contacting in section.engagement with the under face of the shoe sole. Fig. 2 is a view on anenlarged scale showing the Nails I I are then driven into place throughopencalk of Fig. l in section. ings I2 formed in the washer in spacedrelation Fig. 3 is a view similar to Fig. 1, showing a to each othercircumferentially thereof with reloggers calk applied to a shoe sole.duced ends l3 of the nails clinched as shown in Fig. 4 is a View of theloggers calk on an en- Fig. l. The openings I2 are cup-shaped to formlarged scale. sockets and the heads I4 of the nails are of hemi- Fig. 5is a view looking at the inner face of the spherical formation toprovide a ball and socket disc through which the calk is mounted. fitallowing the washer to have tilting movement Fig. 6 is a view looking atthe outer face of the when a shoe sole is flexed. Therefore, the nailsdisc. will not be broken or loosened by strains when Fig. 7 is anelevation showing a golfers spike walking. applied to the disc. In Figs.3 and 4 there has been shown a calk Fig.8 is aperspective view of amodified form of I5 for use on loggers shoes substituted in lieu calkwith the washer omitted. of the calk I of the hob nail type. This calkhas Fig. 9 is a perspective view of another modified an elongated headI6 tapered toward its outer end form of calk. and a neck I6 which passesthrough the collar 8 Fig. 10 is a side view of a set used for driving ofthe washer and conforms to the curvature of calks and nails into a shoesole. the annular rib 9. A shank H which is to be driven into the shoesole is formed'integral with the neck I6 and, after the neck has beenpassed through the collar, sufficient metal is stripped from the shankto form the extension l8 indicated by dotted lines in Fig. 4. Thisextension engages the end edge of the collar and firmly holds the calkand collar in proper relation to each other. This embodiment of theinvention is applied as previously explained) the shank being driveninto the shoe sole and nails I I driven through the openings [2 of thewasher and clinched to hold the nails firmly in place.

In order to equip golf shoes with spikes, a calk I9 is used. This calkhas a neck which fits snugly through the collar 8 of the washer andafter the neck has been passed through the collar, it is formed with aclinching head 2| which engages the edge of the neck and holds the calkand washer firmly in engagement with each other. The golf spike isapplied to the sole of a shoe merely by placing it against the shoe soleand then driving nails through the openings of the washer and clinchingthe nails to firmly hold the spikes against the shoe sole.

In Figs. 8 and 9 there have been shown other modified forms of calkswhich may be used. These calks, which are indicated at 22 and 23, aresimilar in construction and each has a head 24, a neck 25 and a shank26. The only difierence between these calks is the shape of the head 24,the head of calk 22 being of hexagon formation and the head of the calk23 being square. Either of these calks may have a washer 7 applied to itand used in place of the calks previously described.

In Fig. 10 of the drawing, there has been illustrated a set by means ofwhich the various forms of calks may be driven into place when they areapplied to a shoe sole. This set 21 is formed of strong metal and has ashank or stem 28 and a head 29 at one end of the stem formed with arecess or pocket 30 shaped to receive the calk and washer surroundingthe calk. During use of the set, the calk and the companion washer arefitted into the pocket, the shank of the calk disposed against the shoesole and the end of the stem struck with a hammer to drive the calk intoplace. By using the set, the head of the calk will not be deformed byblows of a hammer. After the calk has been driven into place the nailswill be driven through the openings of the washer and the set then againemployed for driving all the nails into place with equal force andclinching their reduced ends.

Having thus described the invention, what is claimed is:

1. In a device of the character described, a calk having a head and aneck extending therefrom, a washer fitting about the neck and havingmarginal portions formed with nail openings constituting cup shapedsockets, and nails for passing through the nail openings havinghemispherical portions fitting within the sockets and cooperatingtherewith to provide ball and socket joints permitting tilting of thewasher and calk when a shoe sole is flexed during walking.

2. In a device of the character described, a calk having a head and areduced neck extending therefrom, and a washer surrounding the calk andhaving a center opening surrounded by a collar and an outstanding ribsurrounding the collar, said collar being arcuate transversely andmerging into the collar and neck conforming to the contour of the collarand adjoining portion of the rib, and means for securing the washerabout the calk in close fitting engagement with the neck.

3. In a device of the character described, a calk having a head formedwith a reduced neck and a shank extending therefrom, a washersurrounding said calk and formed with an outstanding annular rib merginginto an inwardly extending collar fitting snugly about the neck, andmeans at the junction of the neck and shank for engagement with thecollar to firmly hold the collar and washer in engagement with eachother.

4. In a device of the character described, a calk having a head formedwith a reduced neck and a shank extending therefrom, a washersurrounding said calk and formed with an outstanding annular rib merginginto an inwardly extending collar fitting snugly about the neck, and anoutstanding extension at the junction of the shank with the neckoverlying the end edge of the collar for holding the collar firmly inplace about the neck.

5. In a device of the character described, a calk having a head formedwith a reduced neck and a shank extending therefrom, a washersurrounding said calk and formed with an inwardly extending collarfitting snugly about the neck, the head being progressively reduced indiameter to form stepped concentric shoulders for biting engagement withslippery surfaces, and means for securing the washer in place about theneck.

6. In a device of the character described, a calk having a head formedwith a reduced neck and a shank extending therefrom, a washersurrounding the calk and formed with an inwardly extending collarfitting snugly about the neck, the head being formed with sharp edgesfor biting engagement with slippery surfaces, and means for securing thecollar about the neck.

LOREN W. NITKEY.

